Statistics
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 Biogass emission prognosis at the landfills
作者  Bicheldey, T.K. & Latushkina, E.
作者单位  
期刊  International Journal of Environment Science and Technology 卷期  Vol. 7, No. 4, 2010 时间  2011.01.17
关键词  Air pollution; Atmosphere; Carbon dioxide; Methane; Solid waste
摘要   The present study aims to estimate biogas potential of two Russian landfills situated in the republic of Tatarstan and in Moscow Region. Due to environmental, economic, social and energetic consideration of biogas for human being, utilization of such a by-product would be of high concern. To date, there are seven biogas utilization projects which have been developed and implemented at municipal solid waste landfills of Russia. The purpose of the research was to determine the biogas potential at the closed landfills. During the studies held in 2008; sampling, transportation, storage of biogas and landfill soil samples, laboratory investigations; physicochemical and analytical methods for measuring of proteins, carbohydrates and fats in the organic part of the soil and the analysis of empirical data by the methods of computer modeling and mathematical statistics were carried out. The obtained results of the research; concentrations of biogas components: methane, carbon dioxide, carbon oxide, nitrogen, hydrogen and oxygen, gas flows, composition of the organic part of the fields and analysis of gas distribution on the surface of the landfills; has shown scientific and practical importance. Results could be used for the assessment of biogas potential at the landfills for further biogas utilization projects implementation with electrical or thermal energy production.
 Why Patients Miss Follow-up Appointments: A Prospective Control-Matched Study
作者  Van der Meer, G. & Loock, J.W.
作者单位  
期刊  East African Journal of Public Health 卷期  Vol. 5, No. 3, 2008 时间  2010.09.20
关键词  Cancer, Appointments, Transport, Follow-up
摘要   Objectives:To investigate missed appointments in a South African tertiary hospital. Study Design:Prospective, descriptive series with controls. Setting:The ENT/Oncology clinic at Tygerberg Academic Hospital, South Africa. Subjects: 305 patients with a head and neck malignancy who had follow-up appointments over 4 consecutive months between June and September 2006. A control group of 31 patients who attended the clinic was recruited in September 2006. Method:Analysis of the clinic attendance statistics to identify patients who missed follow-up appointments followed by a file review and interview of these patients. The results were compared with a control group. Outcome measures: 1) Incidence rate of failure to attend follow-up. 2) Causative factors Results:51 (17%) booked patients missed their appointments. Non-attenders were most likely to miss their follow-up between 6 and 12 months (17/31) after treatment. No correlations were found between diagnosis, disease stage and missed appointments. Reasons include:transport (19 responses), ill-health (6) and financial constraints (5). State transport was unavailable to almost two-thirds of the responders who cited transport as a problem. Conclusions:The 17% missed appointment rate is largely due to transport constraints. The commonest time for patients to miss appointments is the 6-12 month follow-up period. The authors seek to identify patients at risk of missed appointments and suggest interventions to decrease this incidence.
 Pattern of cervical dilatation among parturients in Ilorin, Nigeria
作者  Ijaiya, Munir'deen A;Aboyeji, Abiodun P;Fakeye, Olurotimi O;Balogun, Olayinka R;Nwachukwu, Duum C & Abiodun, Moses O
作者单位  
期刊  Annals of African Medicine 卷期  Vol. 8, No. 3, 2009 时间  2010.07.19
关键词  Cervical Dilatation, First Stage, Spontaneous LaborIrritable Syndrome de la communauté, africains
摘要   Objective: To evaluate the pattern of cervical dilatation in live singleton pregnancies with spontaneous onset of labor and to compare any differences among nulliparas (P ara 0) and multiparas (Para ≥1). Material and Methods: Descriptive statistics are presented for 238 consecutive labor patients with spontaneous onset, ≥37 weeks gestation, live singleton pregnancy and who had spontaneous vertex delivery at the University of Ilorin Teaching Hospital, Nigeria, from May 2004 to June 2004. Pre-labor rupture of membrane and referred cases were excluded. Results: The mean cervical dilatation on presentation and duration of labor before presentation in labor ward among nulliparas were 5.40 cm and 6.66 hours; and among multiparas, 6.45 cm and 5.15 hours, respectively, the overall mean being 6.12 cm and 5.63 hours, respectively. The average time spent to achieve full cervical dilatation from time of arrival in labor ward was longer in nulliparas (4.80 hours) than in multiparas (3.60 hours) (ttest not significant;P> 0.05). Overall mean total length of first stage of labor was 9.36 hours, while the total length of first stage of labor was 11.03 hours and 8.53 hours for nulliparas and multiparas, respectively (difference is significant;ttestP< 0.05). Significant negative correlation existed between parity and total length of first stage of labor. Mean cervical dilatation rate in labor ward (active phase) was higher in multiparas (1.83 cm/h) than in nulliparas (1.76 cm/h), but the difference was not significant (ttestP> 0.05). No significant correlation existed between rate of cervical dilatation and maternal age, gestational age and fetal size. Conclusion: It is evident from this study that higher the parity the shorter the length of first stage of labor; however, significant difference existed only in the first half of first stage of labor between nulliparas and multiparas. Mean rate of cervical dilatation was greater than the WHO-specified and Philpott′s lower limit of 1 cm/h in active phase of labor.Objectif:pour évaluer la motif de dilatation du col utérin dans les grossesses singleton live avec spontanée apparition du travail et de comparer les différences entre les nulliparas (para 0) et multiparas (para ≥1). Methodes:Statistiques descriptives sont présentées pour 238 cas du travail consécutifs avec apparition spontanée, ≥37weeks gestation, vivre singleton grossesse et avait vertex spontanée livraison à l’hôpital d’enseignement universitaire de Ilorin, Nigéria, de mai 2004 à juin 2004. Rupture prelabour de la membrane et cas mentionnés ont été exclus. Résultats:le signifi e la dilatation du col utérin sur présentation et la durée du travail avant présentation dans le quartier du travail chez les nulliparas a été cm 5.40 et 6.66hrs et cm 6.45 et 5.15hrs chez multiparas, alors que moyenne globale était cm 6.12 et 5.63hrs respectivement. Le temps moyen passé pour atteindre la dilatation complète du col de moment de l’arrivée dans le quartier du travail était plus longtemps dans nulliparas (4.80hrs) que dans multiparas (3.60hrs), t tester non signifi cative p > 0,05. Dans l’ensemble signifi e longueur totale de première étape du travail a été 9.36hrs, tandis que 11.03hrs et 8.53hrs pour nulliparas et multiparas respectivement (différence est importante, t tester p > 0,05).Corrélation négative signifi cative existait entre parité et la longueur totale de première étape du travail. Signifi e que le taux de dilatation du col utérin dans quartier du travail (active phase) était plus élevé dans multiparas (1,83 cm/h) que dans nulliparas (1.76 cm/h), mais la différence n’est pas signifi cative, t tester p > 0,05. Aucune corrélation signifi cative n’existait entre les taux de dilatation du col utérin et âge maternel, âge gestationnel et taille du foetus. Conclusion:il ressort de cette étude que plue la parité, la plus courte de la longueur de première étape de travail, toutefois différence signifi cative existait uniquement dans le premier la moitié de première étape du travail entre nulliparas et multiparas. Taux moyen de dilatation du col utérin a été supérieure à WHO et Philpott de la plus faible limite de 1 cm/hr. phase active de travail.
 Pattern of cervical dilatation among parturients in Ilorin, Nigeria
作者  Ijaiya, Munir'deen A;Aboyeji, Abiodun P;Fakeye, Olurotimi O;Balogun, Olayinka R;Nwachukwu, Duum C & Abiodun, Moses O
作者单位  
期刊  Annals of African Medicine 卷期  Vol. 8, No. 3, 2009 时间  2010.07.19
关键词  Irritable Syndrome de la communauté, africainsCervical Dilatation, First Stage, Spontaneous Labor
摘要   Objectif:pour évaluer la motif de dilatation du col utérin dans les grossesses singleton live avec spontanée apparition du travail et de comparer les différences entre les nulliparas (para 0) et multiparas (para ≥1). Methodes:Statistiques descriptives sont présentées pour 238 cas du travail consécutifs avec apparition spontanée, ≥37weeks gestation, vivre singleton grossesse et avait vertex spontanée livraison à l’hôpital d’enseignement universitaire de Ilorin, Nigéria, de mai 2004 à juin 2004. Rupture prelabour de la membrane et cas mentionnés ont été exclus. Résultats:le signifi e la dilatation du col utérin sur présentation et la durée du travail avant présentation dans le quartier du travail chez les nulliparas a été cm 5.40 et 6.66hrs et cm 6.45 et 5.15hrs chez multiparas, alors que moyenne globale était cm 6.12 et 5.63hrs respectivement. Le temps moyen passé pour atteindre la dilatation complète du col de moment de l’arrivée dans le quartier du travail était plus longtemps dans nulliparas (4.80hrs) que dans multiparas (3.60hrs), t tester non signifi cative p > 0,05. Dans l’ensemble signifi e longueur totale de première étape du travail a été 9.36hrs, tandis que 11.03hrs et 8.53hrs pour nulliparas et multiparas respectivement (différence est importante, t tester p > 0,05).Corrélation négative signifi cative existait entre parité et la longueur totale de première étape du travail. Signifi e que le taux de dilatation du col utérin dans quartier du travail (active phase) était plus élevé dans multiparas (1,83 cm/h) que dans nulliparas (1.76 cm/h), mais la différence n’est pas signifi cative, t tester p > 0,05. Aucune corrélation signifi cative n’existait entre les taux de dilatation du col utérin et âge maternel, âge gestationnel et taille du foetus. Conclusion:il ressort de cette étude que plue la parité, la plus courte de la longueur de première étape de travail, toutefois différence signifi cative existait uniquement dans le premier la moitié de première étape du travail entre nulliparas et multiparas. Taux moyen de dilatation du col utérin a été supérieure à WHO et Philpott de la plus faible limite de 1 cm/hr. phase active de travail.Objective: To evaluate the pattern of cervical dilatation in live singleton pregnancies with spontaneous onset of labor and to compare any differences among nulliparas (P ara 0) and multiparas (Para ≥1). Material and Methods: Descriptive statistics are presented for 238 consecutive labor patients with spontaneous onset, ≥37 weeks gestation, live singleton pregnancy and who had spontaneous vertex delivery at the University of Ilorin Teaching Hospital, Nigeria, from May 2004 to June 2004. Pre-labor rupture of membrane and referred cases were excluded. Results: The mean cervical dilatation on presentation and duration of labor before presentation in labor ward among nulliparas were 5.40 cm and 6.66 hours; and among multiparas, 6.45 cm and 5.15 hours, respectively, the overall mean being 6.12 cm and 5.63 hours, respectively. The average time spent to achieve full cervical dilatation from time of arrival in labor ward was longer in nulliparas (4.80 hours) than in multiparas (3.60 hours) (ttest not significant;P> 0.05). Overall mean total length of first stage of labor was 9.36 hours, while the total length of first stage of labor was 11.03 hours and 8.53 hours for nulliparas and multiparas, respectively (difference is significant;ttestP< 0.05). Significant negative correlation existed between parity and total length of first stage of labor. Mean cervical dilatation rate in labor ward (active phase) was higher in multiparas (1.83 cm/h) than in nulliparas (1.76 cm/h), but the difference was not significant (ttestP> 0.05). No significant correlation existed between rate of cervical dilatation and maternal age, gestational age and fetal size. Conclusion: It is evident from this study that higher the parity the shorter the length of first stage of labor; however, significant difference existed only in the first half of first stage of labor between nulliparas and multiparas. Mean rate of cervical dilatation was greater than the WHO-specified and Philpott′s lower limit of 1 cm/h in active phase of labor.
 Investment in Cocoa Production in Nigeria: A Cost and Return Analysis of Three Cocoa Production Mana
作者  Nkang, NM;Ajah, EA;Abang, SO & Edet, EO
作者单位  
期刊  African Journal of Food Agriculturen Nutrition and Development 卷期  Vol. 9, No. 2, 2009 时间  2010.07.05
关键词  Cocoa, benefit, cost, investment, management
摘要   The study examined costs and returns in cocoa production in Cross River State by comparing three identified management systems of cocoa production in the area. A two-stage sampling procedure was used to select a hundred and fifty cocoa farmers for the study. Data used in the study were collected using structured questionnaires which were administered by the Agricultural Development Programme (ADP) extension agents using the participatory approach while the data were analysed using descriptive statistics such as mean, median, standard deviation, etc. and an investment decision model comprising the net present value (NPV) and benefit-cost ratio (BCR) analysis. Results show that the respondents were predominantly small scale farmers with farm sizes ranging from one to five hectares. The age distribution of the farmers showed that 61.3% of them were among the active farming population falling within the age range of 21 to 40 years, and 16.67% of the respondents had no formal education. More than 50% of the total respondents sourced funds from their personal savings in all the management systems considered. Importantly, the study found that cocoa production is a profitable business irrespective of management system, since all of the management systems had positive net present values (NPV) at 10% discount rate. The NPV for lease-managed farms is highest. The benefit-cost ratio (BCR) at 10% discount rate was greater than one for all the three management systems, which indicates that the returns from cocoa production are high. Owner-managed farms had the highest BCR followed by lease-managed farms and sharecropped farms in that order. Lease-managed farms were more viable compared with other management systems in terms of their high NPVs. The study recommends that given the high benefits relative to costs involved in cocoa production irrespective of management system, investments in cocoa production can be increased by providing expanded access to cheap and flexible credit and land, which have presented as limiting factors in cocoa production based on the descriptive statistical analysis in the study.
 Applicability of thermal comfort index as an estimator of critical periods in breeding broilers
作者  Oliveros, Yngrid;Requena, Fanny;León, Alicia;Ostos, Milagros;Parra, Raquel;Marquina, Jorge & Bastianelli, Denis
作者单位  
期刊  Zootecnia Tropical 卷期  Vol. 26, No. 4, 2008 时间  2010.07.05
关键词  stress, chickens, index, weight gain, comfort, temperatureestrés, pollos, índice, ganancia de peso, confort, temperatura.
摘要   To estimate the thermal comfort index (THI) and critical periods (frequency, persistence) in the rearing of broiler chickens, there were generated climatic data of temperature and humidity daily with a frequency of 10 minutes between measures during the dry period (february to march 2006) in an area of commercial production of broilers, located in central Venezuela. The THI was determined for 24 hours from admission to exit of the animals, with calculation of probability of occurrence and persistence of the event and implementation of thresholds and regression equations developed for the birds to estimate the daily weight gain (DWG) on animals. Data obtained were analyzed using descriptive statistics, tests of means, variances, trends, and frequencies and the THI was compared to reference data for their interpretation. With hourly values there were estimated the probability of occurrence and the length of period daily. The results indicated in relation to the cycle of daily THI a highly significant effect on the thermal comfort of the animals, which confirms the importance of time of day on the presence of stress in the animals and its daily variation in the cycle, where it was concluded that the normal condition of the animal was present at 4:30 and 8:30, danger from 10:30 to 16:30, and alert from 18:30 to 2:30. The status of risk of stress in the animal intensified with age due to the process of loss and heat gain. In estimating the DWG through the empirical equation used, differences were highly significant (P<0.0001), possibly due to the effect of temperature and humidity rise in animals with weights from 0.9 to 1.5 kg. The estimate of the THI identified stress conditions, variability, and frequency of inter-daily occurrence in a position to farm.Para estimar el índice de confort térmico (THI) y los periodos críticos (frecuencia, persistencia) en la cría de pollos de engorde, se generaron datos climáticos de temperatura y humedad diaria con una frecuencia de 10 minutos entre medidas, durante el periodo seco (febrero a marzo, 2006) en un galpón de producción comercial de pollos de engorde, localizado en la región central de Venezuela. El índice THI se determino para las 24 horas del día desde el ingreso hasta la salida de los animales, con cálculo de probabilidad de ocurrencia y persistencia del evento y aplicación de umbrales y ecuaciones de regresión desarrolladas para las aves para estimar la ganancia diaria de peso (GDP) de los animales. Los datos obtenidos se analizaron a través de estadísticos descriptivos, pruebas de medias, varianzas, tendencias y frecuencias y el índice THI fue comparado con valores referenciales de THI para su interpretación. Con los valores horarios estimados se calculo la probabilidad de ocurrencia y la duración del periodo diario. Los resultados en relación al ciclo diario del THI indicaron un efecto altamente significativo sobre el confort térmico de los animales, que permite confirmar la importancia de la hora del día sobre la presencia de estrés en los animales y su variación dentro del ciclo diario, donde se concluye que la condición normal del animal se presentó en horario de 4:30 y 8:30, peligro de 10:30 a 16:30 y alerta de 18:30 a 2:30. La condición de riesgo de estrés en el animal se intensificó con la edad debido al proceso de pérdida y ganancia de calor. Al estimar la GDP a través de la ecuación empírica utilizada se encontraron diferencias altamente significativas (P<0,0001) posiblemente debido al efecto de la temperatura y humedad del lugar para animales con pesos desde 0,9 hasta 1,5 kg. La estimación del índice THI permitió detectar condiciones de estrés, variabilidad ínter diaria y frecuencia de ocurrencia en condiciones de granja.
 Management of Low Back Pain: - Attitudes and Treatment Preferences of Physiotherapists in Nigeria
作者  Ayanniyi, O.;Lasisi, O.T.;Adegoke, B.O.A. & Oni-Orisan, M.O.
作者单位  
期刊  African Journal of Biomedical Research 卷期  Vol. 10, No. 1, 2007 时间  2010.07.05
关键词  Attitudes, Preferences, Physiotherapists, Back pain management.
摘要   Back Pain is one of the most frequent reasons for visiting a general practitioner or physical therapist. The objectives of this study were to investigate the attitudes and treatment preferences of Physiotherapists in Nigeria about the management of Low back Pain. A survey of 101 practicing physiotherapists from selected health institutions was carried out using a structured questionnaire. The results were analysed using descriptive and inferential statistics of Chi – square at 0. 0 5. More than 90% of the physiotherapists surveyed recommended review of x-rays, and palpation methods, in the evaluation of patients, About 70% employed assessment of posture, McKenzie evaluation, Sacroiliac joint and neurological screening. The common treatment preferences by 83% of the physiotherapists surveyed was education regarding proper body mechanics in daily activities. More than 82.5% of the physiotherapists perceived McKenzie approach as very effective, while 60% rated it as most useful method in managing LBP. About 23% of the subjects believed muscle strain and disc problem as the principal underlying causes of LBP among their patients. It was concluded that McKenzie approach was the most effective and useful method for managing LBP and education in proper body mechanics in daily activities was preferred in the management of LBP.
 Prevalence and Pattern of Back Pain among Pregnant Women Attending Ante-Natal Clinics in Selected He
作者  Ayanniyi, O.;Sanya, A.O.;Ogunlade, S.O. & Oni-Orisan, M.O.
作者单位  
期刊  African Journal of Biomedical Research 卷期  Vol. 9, No. 3, 2006 时间  2010.06.25
关键词  Back pain; Pattern; Pregnancy
摘要   Back pain is (BP) is recognized as an important problem in pregnancy. The objectives of this study were to examine the prevalence and pattern of back pain (BP) in pregnancy. A survey of 2,187 pregnant women attending ante-natal clinics in selected Medical facilities in Ibadan and Ogbomoso, Nigeria was carried out using pre-tested close-ended questionnaire. Information on prevalence, pattern and characteristics of back pain in pregnancy were obtained. Data obtained was analyzed using both descriptive and inferential statistics of mean, standard deviation, and inferential statistics of independent t-tests and chi-square tests. One thousand and eight (52.5%) of the 1919 included subjects had back pain in pregnancy. The mean age of those with and without back pain was 26.8 ± 5.3 and 27.1 ± 5.4 years respectively. Mean number of pregnancy was higher in subjects with back pain than those without back pain. The pain site among the 1008 subjects with back pain was low back in 669 subjects (66.4%), posterior pelvic in 242 subjects (24.0%) and high back in 97 subjects (9.6%). Among the subjects with back pain, 315 (31.3%) and 53 (5.3%) were in their first and sixth pregnancies respectively. Postural modification relieved the back pain in about 50% of the subjects across the three back pain groups during pregnancy. It was concluded that back pain is a common and real complaint in pregnancy. It is therefore recommended that rather than dismiss it as trivial, back pain in pregnancy should be attended to as part of ante-natal care.
 Initial Attempt to Establish Population Reference Values for Blood Glucose and Lipids in Makerere Un
作者  Bimenya, G. S.;Byarugaba, W.;Kalungi, S.;Mayito, J.;Mugabe, K.;Makabayi, R.;Ayebare, E.;Wanzira, H. & Muhame, M.
作者单位  
期刊  African Health Sciences 卷期  Vol. 6, No. 4, 2006 时间  2010.06.25
关键词  
摘要   The purpose of this study was to establish blood glucose and lipid profile of Makerere University undergraduate students. Study design:This was a cross-sectional study. Materials and methods:A total of 183 students participated in the study. Capillary blood glucose was read instantly on a finger prick sample off Sensorex™ glucose analyzer.Venous blood from the antecubital vein was used for lipid assays.Total cholesterol was assayed by the oxidase-peroxidase enzyme system. Plasma triacylglycerols were analyzed using the glycerokinase-oxidase reagents. HDL and LDL cholesterol were analyzed using homogeneous enzymatic methods. Concentration results for each variable were plotted in histograms and the type of distribution established. Summary statistics were then calculated non- parametrically to set reference values. Results:Empirical ranges were: Cholesterol 2.1-7.2 mmol/L; triacylglycerols 0.4-6.87 mmol/L; HDLC 0.09-2.13 mmol/L; LDLC 0.95-5.38 mmol/L and capillary blood glucose 2.72-9.21 mmol/L. The reference ranges covering the central 95 percentile were: Cholesterol 2.65-5.15 mmol/L, triacylglycerols 0.61-4.03 mmol/L; HDLC 0.58-1.97 mmol/L; LDLC 1.25-3.57 mmol/L and capillary blood glucose 3.11-7.55 mmol/L. Conclusion: The established reference values for the age group 20-26 years were:Total Cholesterol 2.65-5.15 mmol/L, LDL 1.25 -3.57 mmol/L, HDL 0.58-1.97 mmol/L,TG 0.61-4.03 mmol/L and capillary blood glucose 3.11-7.55 mmol/L which differed from set international values. Recommendations:We recommend the establishment of indices for the indigenous populations, conscientiously planned diets, and regular exercise.
 Effect of Massage Therapy on Children with Asthma
作者  Nekooee, Afsaneh;Faghihinia, Jamal;Ghasemy, Ramin;Ghaibizadeh, Mahin & Ghazavi, Zohreh
作者单位  
期刊  Iranian Journal of Pediatrics 卷期  Vol. 18, No. 2, 2008 时间  2010.06.25
关键词  Asthma; Children; Massage therapy; Spirometry, Alternative medicine,
摘要   Objective:Asthma is the most common chronic illness in childhood and despite significant improvements for disease control and development of many different drugs, its prevalence is increasing worldwide. Recently, the use of complementary and alternative medicine (CAM) in treatment of many diseases is increasing. The aim of this study was to investigate the effect of massage therapy on children with asthma. Material & Methods:In this work, 44 asthmatic children aged 5 to 14 years were studied in theallergy and asthma clinic. The samples were chosen randomly divided into two groups. The first group received massage therapy the second group received routine therapy and care (control group). Parents in the massage group were instructed and asked to conduct a 20 minutes child massage every night at bedtime for one month. The massage involved stroking and kneading motions in face, head, neck, shoulders, arms, hands, legs, feet and back. Data was collected through interview and spirometry measurements. The control group received only standard asthma therapy for one month. A spirometry along with exercise was done in both groups at baseline. A one month ambulatory observation followed. Descriptive and inferential statistics were used to analyze the findings. Findings:There was a statistically significant difference in mean spirometric indexes in massage group at baseline and after one month follow up [forced vital capacity (FVC) with (P=0.05) Forced expiratory volume in 1 second (FEV1) with (P=0.02) and FEV1 after exercise with (P= 0.0005). Indeed; there is significant difference between mean changes of FVC (2-1) with (P=0.05) and FEV1 (2-1) in two groups with (P=0.04). Conclusion:According to the obtained results, daily massage can improve airway tonicity, decrease airway sensitivity, and better control of asthma. Applying this method can decline the use of non reasonable drugs and can be considered as a complementary method to pharmaceutical methods.
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